STORAGE: 支持多级setter getter delete 如 luo.luo1.luo2 来模拟多级namespace
session storage
key
value
设置session storage
key
value
获得session storage
key
删除session storage
删除所有susession storage
现有的session storage
local storage
key
value
设置local storage
key
value
获得local storage
key
删除local storage
删除所有local storage
现有的loca l storage